MPEC 2021-E59 : 2021 ER1
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M.P.E.C. 2021-E59 Issued 2021 March 8, 00:20 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
2021 ER1
Observations:
K21E01R* C2021 03 06.31829411 16 38.04 +07 42 21.7 20.96GVEE059G96
K21E01R C2021 03 06.32342511 16 37.72 +07 42 09.1 21.54GVEE059G96
K21E01R C2021 03 06.32854011 16 37.31 +07 41 56.8 21.23GVEE059G96
K21E01R C2021 03 06.33364711 16 36.98 +07 41 45.5 22.03GVEE059G96
K21E01R KC2021 03 06.43471 11 16 29.98 +07 37 49.0 21.5 RoEE059691
K21E01R KC2021 03 06.44367 11 16 29.33 +07 37 28.6 21.9 RoEE059691
K21E01R 1C2021 03 06.91834 11 16 04.81 +07 18 39.1 21.9 VVEE059033
K21E01R 1C2021 03 06.92192 11 16 04.58 +07 18 30.7 22.1 VVEE059033
K21E01R 1C2021 03 06.92551 11 16 04.34 +07 18 22.4 22.0 VVEE059033
K21E01R 1C2021 03 07.14751 11 15 49.48 +07 09 30.6 21.9 VVEE059033
K21E01R 1C2021 03 07.15109 11 15 49.24 +07 09 22.1 21.5 VVEE059033
K21E01R KC2021 03 07.20682111 15 48.28 +07 07 16.2 21.8 VuEE059H21
K21E01R KC2021 03 07.21290011 15 47.83 +07 07 01.8 21.9 VuEE059H21
K21E01R KC2021 03 07.21817011 15 47.46 +07 06 49.1 21.9 VuEE059H21
K21E01R KC2021 03 07.26132711 15 45.29 +07 05 09.9 21.04GVEE059I52
K21E01R KC2021 03 07.26721811 15 44.88 +07 04 55.7 20.60GVEE059I52
K21E01R KC2021 03 07.27310611 15 44.42 +07 04 40.9 20.57GVEE059I52
K21E01R KC2021 03 07.27899411 15 44.00 +07 04 27.0 20.57GVEE059I52
K21E01R KC2021 03 07.95288111 15 04.14 +06 36 54.8 21.1 GVEE059L01
K21E01R KC2021 03 07.95522911 15 03.96 +06 36 49.4 20.9 GVEE059L01
K21E01R KC2021 03 07.95795911 15 03.78 +06 36 42.7 21.0 GVEE059L01
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, U. Laux, F. Ludwig, B. Stecklum. Measurer B. Stecklum. 1.34-m
f/3 Schmidt + CCD.
691 Steward Observatory, Kitt Peak-Spacewatch. Observer T. H. Bressi. 0.9-m
f/3 reflector + CCD.
G96 Mt. Lemmon Survey. Observer G. J. Leonard. Measurers E. J. Christensen,
G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A.
Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L.
Seaman, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers S. Foglia, L. Buzzi, T. Linder, R. Holmes. 0.81-m f/4.0
astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D.
Grauer, H. Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A.
Pruyne, D. Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m
reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, D. Pujagic, V. Dobos.
Measurers D. Pujagic, K. Korlevic. 1.0-m f/2.9 reflector + CCD.
Orbital elements:
2021 ER1 Earth MOID = 0.1451 AU
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5 Veres
M 306.21214 (2000.0) P Q
n 0.42802428 Peri. 219.53878 -0.87624167 +0.48100797
a 1.7437750 Node 349.10101 -0.39441144 -0.75030346
e 0.3580956 Incl. 8.77420 -0.27683958 -0.45351521
P 2.30 H 24.4 G 0.15 U 8
Residuals in seconds of arc
210306 G96 0.2- 0.5+ 210306 033 0.0 0.1- 210307 I52 0.0 0.3+
210306 G96 0.4+ 0.1- 210306 033 0.1+ 0.1+ 210307 I52 0.2+ 0.2+
210306 G96 0.3- 0.5- 210307 033 0.4+ 0.0 210307 I52 0.3- 0.5-
210306 G96 0.1+ 0.1+ 210307 033 0.2+ 0.1+ 210307 I52 0.2- 0.2-
210306 691 0.1+ 0.2- 210307 H21 0.4+ 0.1- 210307 L01 0.1- 0.2-
210306 691 0.6- 0.5+ 210307 H21 0.1+ 0.0 210307 L01 0.3- 0.2+
210306 033 0.2- 0.2- 210307 H21 0.2+ 0.0 210307 L01 0.0 0.2+
Ephemeris:
2021 ER1 a,e,i = 1.74, 0.36, 9 q = 1.1193
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2021 02 06 11 24 29.0 +18 21 59 0.3685 1.3175 149.8 22.1 23.9
...
2021 02 21 11 25 06.9 +14 20 06 0.2738 1.2533 163.0 13.3 22.9
...
2021 03 01 11 20 59.3 +10 48 27 0.2341 1.2225 171.1 7.2 22.2
...
2021 03 07 11 15 59.5 +07 15 56 0.2093 1.2015 177.6 2.0 21.6
2021 03 08 11 15 01.2 +06 35 27 0.2056 1.1981 178.4 1.4 21.5
2021 03 09 11 14 00.7 +05 53 28 0.2021 1.1949 178.5 1.2 21.5
...
2021 03 15 11 07 24.1 +01 09 29 0.1835 1.1764 172.0 6.8 21.6
...
2021 03 23 10 58 04.0 -06 29 46 0.1661 1.1554 161.6 15.8 21.7
...
2021 04 07 10 45 12.8 -23 06 43 0.1546 1.1283 143.0 32.2 22.0
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-E59
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